The supermodel was met at the gate by officers when her plane from Bodrum, Turkey landed at London Gatwick on Sunday afternoon.
Bedfordshire Police told BBC News: "We were called to assist staff in escorting a passenger from a flight arriving into Luton airport [on Sunday] afternoon. The passenger had been reported as being disruptive on the flight.
"Officers attended and escorted the passenger from the plane. No formal complaints were made against her and she was not arrested."
A rep for EasyJet also confirmed the story, saying the airline "does not tolerate disruptive behaviour and will always report any incidents to the authorities".
No details about the alleged behaviour have been released.
Kate, 41, has not made any comment.
The story has been trending on Twitter all morning with many users appearing quite shocked the multi-millionaire supermodel would fly with a budget airline...
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